package com.hexiang.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;
import java.util.Arrays;

/**
 * 自定义redis配置
 */
@Configuration
public class CustomizerRedisConfig extends CachingConfigurerSupport {


	/**
	 * 重写生成key的方法：类名+方法名+参数名
	 */
	@Bean
	@Override
	public KeyGenerator keyGenerator() {
		return (target, method, objects) ->
				target.getClass().getName() + "." + method.getName() + Arrays.toString(objects);
	}

	/**
	 * 自定义RedisTemplate
	 *
	 * @param redisConnectionFactory
	 * @return
	 */
	@Bean
	public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
		RedisTemplate<Object, Object> template = new RedisTemplate<>();
		template.setConnectionFactory(redisConnectionFactory);
		// ֵ使用JSON格式序列化对象，对缓存数据key和value进行转换
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
		// 解决查询缓存转换异常的问题
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		// 设置RedisTemplate模板API的序列化方式为JSON
		template.setDefaultSerializer(jackson2JsonRedisSerializer);
		return template;
	}

	/**
	 * 自定义RedisCacheManager
	 *
	 * @param redisConnectionFactory
	 * @return
	 */
	@Bean
	public RedisCacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
		// 分别创建String和JSON格式序列化对象，对缓存数据key和value进行转换
		RedisSerializer<String> strSerializer = new StringRedisSerializer();
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
		// 解决查询缓存转换异常问题
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		// 定制缓存数据序列化方式及时效
		RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
				.entryTtl(Duration.ofSeconds(300))
				.serializeKeysWith(RedisSerializationContext.SerializationPair
						.fromSerializer(strSerializer))
				.serializeValuesWith(RedisSerializationContext.SerializationPair
						.fromSerializer(jackson2JsonRedisSerializer))
				.disableCachingNullValues();
		return RedisCacheManager.builder(redisConnectionFactory).cacheDefaults(config).build();
	}

}
